Final answer:
The subject of this question is Spanish and it is at the high school level.
Step-by-step explanation:
In the first question, Sofía is asking Javier if he has siblings by using the verb 'tener' which means 'to have'. She asks '¿(tienes) tú hermanos?' meaning 'Do you have siblings?'. Javier responds by saying that he has an older brother who is 29 years old. In the second question, Alejandra is asking about Alejandra's family using the verb 'ser' which means 'to be'. She asks '¿(cómo) (ser) tus padres?' meaning 'What are your parents like?'.
Learn more about Verb conjugation in Spanish